Printing device and board work device

ABSTRACT

A printing device including a conveyance rod which discharges and introduces a screen mask and a board support member; and a control section. The control section performs a mask exchange process including a mask discharge process of discharging the screen mask to be discharged and a mask introduction process of introducing the screen mask to be introduced by controlling a conveyance rod. In addition, the control section performs a support member exchange process including a support member discharge process of discharging the board support member to be discharged and a support member introduction process of introducing the support member to be introduced by controlling the conveyance rod.

TECHNICAL FIELD

The present application relates to a printing device and a board workdevice.

BACKGROUND ART

In the related art, in a printing device which performs a printingprocess of a viscous fluid on a board by using a screen mask, there isknown a printing device which performs automatic exchanging of thescreen mask. For example, PTL 1 discloses a printing device whichincludes a rod that protrudes downward and a slider which slides thescreen mask by moving the rod to perform loading and unloading thescreen mask to and from a main body frame.

CITATION LIST Patent literature

PTL 1: JP-A-04-107146

SUMMARY Technical Problem

In a board work device that performs a work on a board such as printing,there is a case where a board support member for supporting the board isused during the work. In a case where a support member suitable for atype of board to be worked is used, exchange of the board support memberis necessary. However, in the printing device of PTL 1, the exchange ofthe board support member is not considered.

The disclosure has been made to solve such a problem and the main objectthereof is to perform automatic exchanging of the board support member.

Solution to Problem

The disclosure adopts the following means so as to achieve the mainobject described above.

According to the present disclosure, there is provided a printing devicewhich performs a printing process of viscous fluid on a board fixed on aboard support member by using a screen mask, the printing deviceincluding: a support member conveyance section which discharges andintroduces the screen mask and the board support member; and an exchangecontrol section which can perform a mask exchange process including amask discharge process of discharging the screen mask to be dischargedand a mask introduction process of introducing the screen mask to beintroduced by controlling the support member conveyance section and canperform a support member exchange process including a support memberdischarge process of discharging the board support member to bedischarged and support member introduction process of introducing theboard support member to be introduced by controlling the support memberconveyance section.

The printing device includes the support member conveyance section whichdischarges and introduces the screen mask and the board support member.In the printing device, the support member exchange process includingthe discharge and the introduction of the board support member can beperformed by using the support member conveyance section. Therefore, inthe printing device, the automatic exchanging of the board supportmember can be performed. In addition, the printing device can alsoperform the mask exchange process of performing the discharge and theintroduction of the screen mask by using the support member conveyancesection. In other words, the automatic exchanging of the board supportmember and the automatic exchanging of the screen mask can be performedby using the same support member conveyance section together. Therefore,a device configuration can be made compact compared with a case wherethe printing device includes a conveyance section for exchanging thescreen mask and a conveyance section for exchanging the board supportmember separately, for example.

A board work device according to the present disclosure performs a boardwork on a board fixed on a board support member, the board work deviceincluding: a support member conveyance section which discharges andintroduces the board support member; a board fixing section which candispose the board support member thereon and fixes the board by thedisposed board support member when the board work is performed; apositioning section which performs positioning of the board supportmember in a horizontal direction by moving the board support memberdisposed on the board fixing section; and an exchange control sectionwhich performs a support member exchange process including a supportmember discharge process of discharging the board support member to bedischarged by controlling the support member conveyance section and asupport member introduction process of conveying the board supportmember to be introduced to the board fixing section by controlling thesupport member conveyance section and performing positioning of theconveyed board support member by controlling the positioning section.

In the board work device, the support member exchange process includingthe discharge and the introduction of the board support member can beperformed by using the support member conveyance section whichdischarges and introduces the board support member. Therefore, the boardwork device can perform automatic exchanging of the board supportmember. In addition, in the support member introduction process, theboard work device performs the positioning of the conveyed board supportmember by using the positioning section. Therefore, positional deviationof the board support member introduced by the support memberintroduction process in the board fixing section can be suppressed. Inthe board work device of the disclosure, various aspects of the printingdevice of the present disclosure may be adopted or variousconfigurations may be added to the printing device of the disclosure.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a configuration view illustrating an example of a schematicconfiguration of a mounting system 10.

FIG. 2 is an explanatory view illustrating a configuration forperforming a printing process and the like of a printing device 20.

FIG. 3 is a perspective view illustrating a configuration for performingthe printing process and the like of the printing device 20.

FIG. 4 is a block diagram illustrating an electrical connectionrelationship of the printing device 20.

FIG. 5 is a perspective view of a board support member 70 and aconveyance jig 80.

FIG. 6 is a flowchart illustrating an example of a printing processroutine.

FIG. 7 is an explanatory view illustrating a state of an exchangeprocess of a screen mask M and the board support members 70.

FIG. 8 is an explanatory view illustrating a state of the exchangeprocess of the screen mask M and the board support members 70.

FIG. 9 is an explanatory view illustrating a state of the exchangeprocess of the screen mask M and the board support members 70.

FIG. 10 is an explanatory view illustrating conveyance, suction, and aprinting process of a board S.

FIG. 11 is an explanatory view illustrating a state where a supportmember introduction process and a support member discharge process areperformed in parallel.

DESCRIPTION OF EMBODIMENTS

Next, embodiments of the present disclosure will be described withreference to the drawings. FIG. 1 is a configuration view illustratingan example of a schematic configuration of a mounting system 10according to one embodiment of the present disclosure. FIG. 2 is anexplanatory view illustrating a mask work section 26, a first boardfixing section 30, a second board fixing section 40, a processingsection 50, and a storage section 60, which are configured to perform aprinting process, a mask exchange process, and a support member exchangeprocess of a printing device 20. FIG. 3 is a perspective viewillustrating the mask work section 26, the first board fixing section30, the second board fixing section 40, and the processing section 50,which are configured to perform the printing process and the like of theprinting device 20. FIG. 4 is a block diagram illustrating an electricalconnection relationship of the printing device 20. FIG. 5 is aperspective view illustrating a board support member 70 and a conveyancejig 80. The mounting system 10 includes the printing device 20 whichperforms a printing process of solder paste as a viscous fluid on aboardS, multiple mounting devices (not illustrated) which mounts electroniccomponents on the board S, and a management computer (PC) 90 whichmanages information relating to processes by the printing device 20 andthe mounting device. Besides the solder paste, examples of viscousfluids include conductive paste, adhesive, or the like. The printingdevice 20 is configured as a dual lane printing device having two boardfixing sections for fixing conveyed boards S. In addition, the printingdevice 20 is configured as a device by which automatic exchanging of ascreen mask M used in the printing process and automatic exchanging inwhich the conveyance jig 80 of the board support member 70 that supportsand fixes the board S is used can be performed, when setup changingwhich changes the printing target to a different type of board S isperformed. In the embodiment, a left-right direction (X-axis) , afront-rear direction (Y-axis) and an up-down direction (Z-axis) are asillustrated in FIG. 1 to FIG. 3.

As illustrated in FIG. 1 to FIG. 4, the printing device 20 is a devicewhich applies (prints) solder paste on a lower board S via pattern holes11 and 12 formed on the screen mask M by the solder on the screen mask Mpushing into the pattern holes 11 and 12 thereof by using a squeegee 25.The printing device 20 includes a control section 21, a printing processsection 22, the mask work section 26, the first board fixing section 30,the second board fixing section 40, the processing section 50, and thestorage section 60. In addition, the printing device 20 includes anoperation panel on which a display screen is displayed and thus variousinput operations are possible by an operator and a communication sectionthat performs communication with a device connected to the LAN.

The control section 21 is configured as a microprocessor centering CPUand includes a ROM that stores process program, a RAM that is used as awork region, an HDD that stores various data, and the like.

The printing process section 22 is disposed on an upper stage of theprinting device 20 and is a unit that performs the printing process of aviscous fluid on the board S by using the screen mask M. As illustratedin FIG. 4, the printing process section 22 includes a printing head 23,a head moving section 24, the squeegee 25, and a conveyance rod 25 a.The printing device 20 includes the printing head 23 which pressurizesand supplies solder paste onto a screen mask M. The head moving section24 moves the printing head 23 in a predetermined printing direction(front-rear direction) and includes a guide formed in the front-reardirection, a slider which moves along the guide, and a motor whichdrives the slider. A mechanism which moves the printing head 23 in theup-down direction is also installed in the head moving section 24. Thesqueegee 25 is installed on the printing head 23 so as to be movable inthe up-down direction. The squeegee 25 is a plate-like member elongatedin a predetermined direction (X-direction in FIG. 1) and is formed tohave a length longer than the pattern holes 11 and 12. A conveyance rod25 a is installed on the printing head 23 so as to capable of beinglifted and lowered by a motor (not illustrated). The conveyance rod 25 apushes and conveys the screen mask M and the conveyance jig 80 in thefront and the rear by moving the conveyance rod in the front and therear by the head moving section 24 in a state of protruding moredownward than the squeegee 25.

The mask work section 26 is a unit that is installed between theprinting process section 22, the first board fixing section 30 and thesecond board fixing section 40 and fixes and holds the screen mask M.The screen mask M is, for example, a metal thin plate on which a desiredwiring pattern is formed and is fixed to a frame body (mask fixingsection 27) with a predetermined tension. In the screen mask M, patternholes 11 and 12 for forming wiring patterns on the boards S at first andsecond lanes (first and second board fixing sections 30 and 40) in theprinting process are formed, respectively. An identification section(for example, a mark) for position recognition is formed on a lower faceof the screen mask M. The mask work section 26 includes a mask fixingsection 27, a position adjustment section 28 (see FIG. 4), and aconveyance rail 29 (see FIG. 4). The mask fixing section 27 positionsthe screen mask M fitted in the frame body to support and fix the screenmask M in a horizontal posture. The position adjustment section 28adjusts a position the mask fixing section 27 in the XY-directions sothat the pattern holes 11 or 12 are disposed at proper positions on theboard S fixed to the first board fixing section 30 or the second boardfixing section 40. A conveyance rail 29 is a pair of left and rightrails extending in the front-rear direction and guides the screen mask Mand the conveyance jig 80 so that the screen mask and the conveyance jig80 pushed by the conveyance rod 25 a move in the front-rear direction.

The first board fixing section 30 is a unit which is installed below themask working section 26, introduces the board S, positions and supportsthe introduced board S, contacts the board S with the screen mask M onwhich a predetermined wiring pattern is formed, and separates the boardS therefrom. The first board fixing section 30 constitutes the firstlane of the printing process. The first board fixing section 30 includesa board conveyance conveyor 31, a board guide 32, a board guide movingsection 33 (see FIG. 4), a support table lifting and lowering section35, a fixing section lifting and lowering section 36, a support table37, a Y-axis pressing section 38, and a Z-axis clamping section 39. Asillustrated in FIG. 2, the board conveyance conveyor 31 includes aconveyor belt provided on each of a pair of side frames 30 b and a beltrevolving device which revolves and drives the conveyor belt. In theprinting device 20, although not illustrated, an introduction conveyorand a discharge conveyor are installed on an upstream side and thedownstream side (left and right sides in FIG. 1) on the board conveyancepath of the board conveyance conveyor 31, respectively. The board guide32 is a plate-like member provided on the upper face of each of the pairof side frames 30 b. The board guide moving section 33 is a mechanismwhich moves the pair of side frames 30 b in the front-rear direction tobe approached each other and to be separated from each other.Accordingly, the board guide moving section also moves the board guide32 in the front-rear direction and pinches and fixes the board S in astate where an upper face of the board S and an upper face of the boardguide 32 are flush with each other. The support table lifting andlowering section 35 is a mechanism which lifts and lowers the supporttable 37 with respect to the main body 30 a of the first board fixingsection 30 and includes a support column which guides the support table37 in the up-down direction and a driving motor which moves the supportcolumn up and down. The support table 37 is a member on which the boardsupport member 70 can be disposed. The board support member 70 isexchanged according to the board S.

The board support member 70 is a member that is disposed on the supporttable 37, is connected to a decompression device (not illustrated) by apipe to suck and fix the board S while supporting the board S from alower face side thereof by a negative pressure. As illustrated in FIG.5, the board support member 70 includes a main body section 70 a, a pairof columnar protruding sections 71 and 71 installed so as to protrudefrom the left and right of the main body section 70 a, a pair ofprotruding sections 72 and 72 installed forward of the protrudingsections 71, multiple suction ports 73 opening on the upper face of themain body section 70 a, and a clamped section 74 having an inclinedupper face and protruding rearward of the main body section 70 a. Inaddition, the identification section 75 (for example, a mark) forposition recognition and a bar code 76 for recognizing the type of theboard support member 70 are formed on the upper face of the main bodysection 70 a.

The fixing section lifting and lowering section 36 is a mechanism whichlifts and lowers the entire first board fixing section 30 with respectto a device main body and includes a support column which guides themain body of the first board fixing section 30 in the up-down directionand supports the main body of the first board fixing section and adriving motor which moves the support column up and down. The Y-axispressing section 38 (see FIG. 2) is a mechanism used for the positioningof the board support member 70 and is installed on the support table 37.The Y-axis pressing section 38 includes a block-shaped main body whichis movable in the front-rear direction and presses and moves the boardsupport member 70 rearward and a driving mechanism such as a cylinder(not illustrated) which moves the main body forward and rearward. Inaddition, the Y-axis pressing section 38 also serves as a mechanism forsupplying a negative pressure to the board support member 70 and asuction port connected to the decompression device (not illustrated) bya pipe is installed rearward of the main body. By the main body of theY-axis pressing section 38 being pressed against the board supportmember 70, a path is connected from the decompression device to thesuction port 73, and a negative pressure is supplied to the suction port73. The Z-axis clamping section 39 is a mechanism used for fixing theboard support member 70 and is installed on the rear side frame 30 b.The Z-axis clamping section 39 includes a block-shaped main body whichcan move in the up-down direction and a driving mechanism such as acylinder for moving the main body up and down. The main body of theZ-axis clamping section 39 having moved downward pinches the clampedsection 74 of the board support member 70 along with the support table37 to fix the board support member 70. In addition, a support plate 39 ais installed in the up-down and left-right directions forward of theZ-axis clamping section 39. When the side frame 30 b moves in the frontand the rear by the board guide moving section 33, the Z-axis clampingsection 39 and the support plate 39 a also move in the front and therear, so that the fixing position of the board support member 70 in thefront-rear direction can be changed.

The second board fixing section 40 is a unit which is juxtaposed to thefirst board fixing section 30 and conveys and fixes the board S like thefirst board fixing section 30. The second board fixing section 40constitutes the second lane of the printing process. The second boardfixing section 40 has a main body 40 a and a side frame 40 b andincludes a board conveyance conveyor 41, a board guide 42, a board guidemoving section 43, a support table lifting and lowering section 45, afixing section lifting and lowering section 46, a support table 47, aY-axis pressing section 48, and a Z-axis clamping section 49. Inaddition, the board support member 70 can be disposed on the supporttable 47. The description of the second board fixing section 40 isomitted since the basic configuration thereof is the same as that of thefirst board fixing section 30. The printing device 20 is configured toinclude two board conveyance devices which are the first board fixingsection 30 and the second board fixing section 40 and one mask worksection 26.

The processing section 50 is a unit which performs imaging process ofimaging the identification section (for example, a mark and a notch,unevenness, a character, or the like) or the like for positionrecognition formed on the board S. The processing section 50 includes acarriage 51, a processing section moving section 52, and a positionalinformation acquiring section 55. In addition, the processing section 50includes a board stopper 56 for stopping the board S conveyed in theright direction by the board conveyance conveyor 31 and 41 at apredetermined position in the left-right direction. The positionalinformation acquiring section 55 and the board stopper 56 are installedon the carriage 51 and the carriage 51 moves in the XY-directions by theprocessing section moving section 52. The processing section movingsection 52 includes an X-axis slider 53 and a Y-axis slider 54. TheY-axis slider 54 is a plate-like member whose longitudinal direction isset as the X-axis direction and is moved along a support rail 58 formedon the device in the Y-axis direction (front-rear direction) by a movingmotor. The carriage 51 is installed on the X-axis slider 53 and theX-axis slider moves along a guide formed on the Y-axis slider 54 in theX-axis direction by the moving motor. The processing section 50 moves toany one of a region (also referred to as a first region) of the firstboard fixing section 30 which is the first lane, a region (also referredto as a second region) of the second board fixing section 40 which isthe second lane, and a retraction region (see FIG. 1 to FIG. 3) deviatedfrom the regions. The positional information acquiring section 55 is aunit which can image an identification section formed on the board S, anidentification section formed on the lower face of the screen mask M,and an identification section 75 of the board support member 70 andacquires positional information thereof by imaging. The lower face sideand the upper face side of the positional information acquiring section55 are imaging regions. The board stopper 56 is, for example, a rod-likemember and is installed on the carriage 51 so as to be capable oflifting and lowering by a motor (not illustrated). The board stopper 56abuts against the board S conveyed above the board support member 70 bythe board conveyance conveyors 31 and 41 to stop the boards S by beingin a state where the board stopper 56 protrudes below the support rail58 above the first and the second board fixing sections 30 and 40.

The storage section 60 is installed rearward the main body of theprinting device 20 and is a mechanism which stores members to beexchanged (to be introduced and to be discharged) during an automaticexchanging of the screen mask M or the board support member 70. Thestorage section 60 includes a storage box with front opening and aconveyor lifting and lowering section 62 which lifts and lowers thestorage box. Multiple stages (four stages in the embodiment) of a pairof conveyance conveyors 61 which convey the placed objects in thefront-rear direction are installed in the storage box. The screen mask Mto be introduced into the mask work section 26, a conveyance jig 80 towhich the board support members 70 to be introduced into the firstand/or the second board fixing sections 30 and/or 40 is attached, andthe conveyance jig 80 to which the board support members 70 to bedischarged from the first and/or the second board fixing sections 30and/or 40 is to be attached are stored in three stages of the fourstages of conveyance conveyors 61 in advance by the operator. Inaddition, the remaining one stage of conveyance conveyor 61 is emptiedso as to store the screen mask M to be discharged from the mask worksection 26. The conveyor lifting and lowering section 62 makes the upperface of any conveyance conveyor 61 the same height as the upper face ofthe conveyance rail 29 and, in the state, the conveyance conveyor 61 isoperated so that the storage section 60 introduces a member placed onthe conveyance conveyor 61 into the mask work section 26 or discharges amember from the mask work section 26.

The conveyance jig 80 is a member being capable of conveying the boardsupport member 70 by using the conveyance conveyor 61 and the conveyancerod 25 a. As illustrated in FIG. 5, the conveyance jig 80 has first tofourth protrusion holding sections 81 to 84 installed in this orderinside the frame body 85 from the rear toward the front. Each pair ofthe first to fourth protrusion holding sections 81 to 84 is installed inthe left-right direction, respectively and are installed at a tip of anarm section extending downward from the frame body 85. As illustrated inFIG. 2, the conveyance jig 80 can attach one board support members 70thereto by the first and the second protrusion holding sections 81 and82 and can attach one support member 70 thereto by the third and fourthprotrusion holding sections 83 and 84. Recessed sections slightly largerthan an outer diameter of the protruding sections 71 or the protrudingsections 72 of the board support member 70 are formed on the upper facesof the first to fourth protrusion holding sections 81 to 84. By theprotruding sections 71 and 72 being placed on the recessed section, theconveyance jig 80 can convey while fixing the position of the boardsupport member 70 in the front-rear direction. Although there are pluraltypes of board support members 70 according to the type of board S to besupported, in both cases, the outer diameters of the protruding sections71 and 72 are the same. In addition, the positions of the secondprotrusion holding sections 82 and the fourth protrusion holdingsections 84 in the front-rear direction can be adjusted and, accordingto this, multiple types of board support members 70 having differentsizes (distances between protruding sections 71 and protruding sections72) can be attached thereto. The conveyance jig 80 has substantially thesame width in the left-right direction as that of the mask fixingsection 27 of the screen mask M. Accordingly, the conveyance jig 80 canbe conveyed along the same conveyance rail 29 as the screen mask M. Inaddition, since the same storage section 60 can be used for theconveyance jig 80 and the screen mask M, it is preferable that thelength of the conveyance jig 80 and the screen mask M in the front-reardirection be close to each other. Multiple types of frame bodies 85 orprotrusion holding sections having different sizes or the like may bepresent in the conveyance jig 80 and a bar code 86 for type recognitionof the conveyance jig 80 is attached to the upper face of the frame body85.

Next, a process of performing the printing process on the board S by theprinting device 20 while the printing device 20 performs the automaticexchanging of the screen mask M and the board support member 70 will bedescribed. FIG. 6 is a flowchart illustrating an example of a printingprocess routine performed by the CPU of the control section 21. FIG. 7to FIG. 9 are explanatory views illustrating states of the exchangeprocesses of the screen mask M or the board support members 70. FIG. 10is an explanatory view illustrating the conveyance, suction, andprinting process of the board S.

The printing process routine is stored in the HDD of the control section21 and is performed after the operator instructs the printing device 20for the printing process. When the printing process routine isperformed, the CPU of the control section 21 first determines whether ornot the exchange processes of the screen mask M present in the mask worksection 26 and the board support members 70 present in the first and thesecond board fixing sections 30 and 40, that is, the setup changing isnecessary (step S100). The control section 21 determines whether or notit is necessary to change the setup depending on whether or not thescreen mask M or the board support member 70 necessary for the printingprocess are different between the previous time and the current timebased on information relating to the printing process acquired from themanagement PC 90. As illustrated in FIG. 2, in a case where the setupchange is necessary, a screen mask M to be introduced, a conveyance jig80 to which the board support members 70 to be introduced are attached,and the conveyance jig 80 for attaching the board support members 70 tobe discharged thereto are stored in the storage section 60 in advance bythe operator. The operator reads the bar code 76 or the bar code 86using a bar code reader as necessary to perform matching whether or notthe correct member is stored in the storage section 60. In addition, theoperator adjusts the positions of the second protrusion holding sections82 and the fourth protrusion holding sections 84 in the front-reardirection in advance with respect to the conveyance jig 80 for attachingthe board support members 70 to be discharged thereto.

In a case where the setup change is necessary in step S100, the controlsection 21 performs the mask discharge process of discharging the screenmask M to be discharged from the mask work section 26 (step S110). Thecontrol section 21 moves the conveyance rod 25 a to convey the screenmask M to be discharged present in the mask work section 26 rearwardwhile sliding the screen mask M against the conveyance rail 29 asillustrated in FIG. 7(a). In addition, by controlling the conveyorlifting and lowering section 62 and the conveyance conveyor 61, thescreen mask M to be discharged is placed on the vacant conveyanceconveyor 61. Since it is necessary to discharge the screen mask M in themask work section 26 once so as to perform the exchange process of theboard support member 70, the control section 21 performs the dischargeprocess of the screen mask M even in a case where the screen mask M isnot to be exchanged.

Subsequently, the control section 21 performs a support member dischargeprocess of discharging the board support members 70 to be dischargedfrom the first and the second board fixing sections 30 and 40 (stepS120). First, the control section 21 controls the conveyor lifting andlowering section 62 and the conveyance conveyor 61 to introduce theempty conveyance jig 80 onto the conveyance rail 29 and further movesthe conveyance rod 25 a forward to convey the conveyance jig 80 abovethe first and the second board fixing sections 30 and 40 (FIG. 7(b)). Atthis time, the control section 21 is set so that the first to fourthprotrusion holding sections 81 to 84 are positioned to be deviated inthe front-rear direction (for example, rearward) from directly above theprotruding sections 71 and 72 of the board support members 70.Subsequently, the control section 21 releases the fixing of the boardsupport members 70 on the support tables 37 and 47. Specifically, thecontrol section 21 moves the Y-axis pressing sections 38 and 48 forward,moves the Z-axis clamping sections 39 and 49 upward, and separates thepair of side frames 30 b and 40 b in the front and the rear by the boardguide moving sections 33 and 43 (FIG. 7(c)). Next, the control section21 lifts the board support members 70 on the support tables 37 and 47 bythe support table lifting and lowering sections 35 and 45 and the fixingsection lifting and lowering sections 36 and 46, respectively (FIG.8(a)). Accordingly, the protruding sections 71 and 72 of the boardsupport members 70 are lifted above the first to fourth protrusionholding sections 81 to 84. Subsequently, the control section 21 movesthe conveyance jig 80 forward by the conveyance rod 25 a so that thefirst and the second protrusion holding sections 81 and 82 arepositioned directly below the protruding sections 71 and 72 of the boardsupport member 70 on the support table 37 and the third and fourthprotrusion holding sections 83 and 84 are positioned directly below theprotruding sections 71 and 72 of the board support member 70 on thesupport table 47 (FIG. 8(b)). The control section 21 lowers the supporttables 37 and 47. Accordingly, the two board support members 70 are in astate where the protruding sections 71 and 72 are held on the first tofourth protrusion holding sections 81 to 84 and are in a state of beingattached to the conveyance jig 80 (FIG. 8(c)). Thereafter, the controlsection 21 lowers the entire first and second board fixing sections 30and 40 by the fixing section lifting and lowering sections 36 and 46 tomove the conveyance jig 80 to which the two board support members 70 tobe discharged are attached rearward by the conveyance rod 25 a (FIG. 9).The control section 21 places the conveyance jig 80 to which the boardsupport members 70 are attached to the conveyance conveyor 61 which isempty as it is. As described above, the control section 21 combines theconveyance of the conveyance jig 80 in the front and the rear and thelifting and lowering of the support tables 37 and 47 to perform thesupport member discharge process of the board support members 70.

After the support member discharge process of step S120, the controlsection 21 performs a support member introduction process of introducingthe board support members 70 to be introduced into the first and thesecond board fixing sections 30 and 40 (step S130). The process can beperformed in the reverse order of the support member discharge processdescribed above. In other words, first, the control section 21 conveysthe conveyance jig 80 to which the two board support members 70 to beintroduced are attached forward (FIG. 9) , conveys the board supportmembers 70 above the support tables 37 and 47 (FIG. 8(c)), and lifts thesupport tables 37 and 47 to float the protruding sections 71 and 72 fromthe first to fourth protrusion holding sections 81 to 84 (FIG. 8(b)).Subsequently, the control section 21 moves the conveyance jig 80rearward (FIG. 8(a)) and then lowers the support tables 37 and 47 (FIG.7(c)). Next, the control section 21 moves the conveyance jig 80 rearwardto discharge the conveyance jig 80 and positions and fixes the boardsupport members 70 onto the support tables 37 and 47 (FIG. 7(b)).Specifically, first, the control section 21 causes the pair of sideframes 30 b and 40 b to approach each other in the front and the rear bythe board guide moving sections 33 and 43 and to move the support plates39 a and 49 a to a predetermined position. A position in which thesupport plates 39 a and 49 a are moved in the front-rear direction ispredetermined according to the type of the board S to be printed or thetype of the board support member 70, and the like in advance and isacquired from the management PC 90, for example. Subsequently, thecontrol section 21 moves the Y-axis pressing sections 38 and 48 rearwardto move the board support members 70 on the support tables 37 and 47rearward until the board support members are abutted against the supportplates 39 a and 49 a, respectively. Accordingly, by moving the supportplates 39 a and 49 a and the Y-axis pressing sections 38 and 48 in thefront and the rear, even if the position of the board support member 70detached from the conveyance jig 80 deviates in the front and the rear,the board support member 70 can be positioned in a suitable position.When the board support members 70 are abutted against the support plates39 a and 49 a, respectively, the control section 21 moves the Z-axisclamping sections 39 and 49 downward to press the clamped section 74 andto fix the position of the board support members 70 on the supporttables 37 and 47. As described above, the control section 21 combinesconveyance of the conveyance jig 80 in the front and the rear and thelifting and lowering of the support tables 37 and 47 to perform thesupport member introduction process of the board support members 70. Inaddition, the control section 21 performs positioning of the boardsupport members 70 in the front-rear direction.

After the support member discharge process of step S130, the controlsection 21 performs a mask introduction process of introducing thescreen mask M into the mask work section 26 (step S140). The controlsection 21 performs the process in the reverse order of the maskdischarge process. In other words, the control section 21 first controlsthe conveyor lifting and lowering section 62 and the conveyance conveyor61 to convey the screen mask M to be conveyed to the conveyance rail 29,and moves the screen mask M forward by the conveyance rod 25 a tointroduce the screen mask into the mask work section 26. In a case wherethe screen mask M is not to be exchanged, the screen mask M dischargedin the mask discharge process is introduced.

When the exchange process of the screen mask M and the board supportmembers 70 is ended by performing the process of steps S110 to S140, thecontrol section 21 acquires positional information of the introducedboard support member 70 in the left-right direction (step S150) , anddetermines the correction value of the stopping position of the board Sbased on the acquired positional information (step S160). The controlsection 21 moves the carriage 51 above the support table 37 asillustrated in FIG. 10(a) and causes the positional informationacquiring section 55 to image the identification section 75 on the upperface of the board support member 70. Based on the position of theidentification section 75 in the image acquired from the positionalinformation acquiring section 55, the control section 21 obtains thepositional deviation of the board support member 70 on the support table37 in the left-right direction (conveyance direction of board S),derives a correction value of the stopping position at the time ofconveying the board S to store the correction value in the RAM or thelike. Here, if the board support member 70 deviates in the conveyancedirection of the board S on the support table 37, there is a case wherea problem occurs in suction fixing of the board S depending on thestopping position of the board S. In a case where the position of theboard support member 70 deviates in the left-right direction, thecontrol section 21 also corrects the stopping position of the board S bythe deviated amount so that the positional relationship between theboard support member 70 and the board S is unchanged. The controlsection 21 similarly performs acquisition of positional information andderivation of the correction value for the board support member 70 onthe support table 47.

After step S160 or in a case where it is unnecessary to change the setupin step S100, the control section 21 drives the board conveyanceconveyor 31 to convey the board S to the first board fixing section 30(first lane) to suck the board S to the board support member 70 (stepS170). When the board S is conveyed to the first board fixing section30, the control section 21 moves the carriage 51 in the front and therear, and in the left and the right and lowers the board stopper 56 sothat the board S conveyed to left and right is stopped at apredetermined stopping position on the board support member 70 (FIG.10(b)). At this time, when there is the correction value derived in stepS160, the board stopper 56 is moved to the position where the correctionvalue is added. In addition, the control section 21 lifts the supporttable 37 to abut the upper face of the board support member 70 againstthe lower face of the stopped board S and to suck and fix the board S bya negative pressure from the decompression device.

Subsequently, the control section 21 performs an imaging process of theidentification sections of the board S and the screen mask M by thepositional information acquiring section 55 (step S180) , and thepositions of the board S and the pattern holes 11 of the screen mask Mare adjusted so as to be in the proper position based on the obtainedimage (step S190). The control section 21 starts printing on the firstboard fixing section 30 (step S200, FIG. 10(c)). The control section 21lifts the first board fixing section 30 so as to be abutted against theupper face of the board S and the lower face of the screen mask M. Theprinting head 23 is moved onto the screen mask M on the first lane side,the solder paste is pressurized and discharged from the printing head23, the squeegee 25 is moved in the front and the rear to print thesolder paste on the board S.

After the printing process at the first board fixing section 30, thecontrol section 21 determines whether or not the production process iscompleted based on whether or not there is the board S on which to printnext (step S210). When the production process is not completed, theconveyance of the board S, the positional adjustment of the screen maskM, the printing process, or the like is performed by using the secondboard fixing section 40 (steps S220 to S250). Since the process is thesame as the process (steps S170 to S200) in the first board fixingsection 30 described above, a detailed description thereof will beomitted. After step S250, the control section 21 determines whether ornot the production is completed (step S260) and when the production isnot completed, the control section 21 performs the process of shiftingto step S100. In other words, while performing the setup change ifnecessary, the printing process on the boards S fixed to the first andthe second board fixing sections 30 and 40 is sequentially performed.When the production process is completed in step S210 or S260, thecontrol section 21 ends the present routine.

Here, the correspondence relationship between the constituent elementsof the embodiment and the constituent elements of the disclosure will beclarified. The conveyance rod 25 a of the embodiment corresponds to asupport member conveyance section of the disclosure and the controlsection 21 corresponds to an exchange control section. In addition, thefirst and the second board fixing sections 30 and 40 correspond to theboard fixing section, the Y-axis pressing sections 38 and 48, the boardguide moving sections 33 and 43, and the support plates 39 a and 49 acorrespond to the positioning section, the board conveyance conveyors 31and 41 correspond to the board conveyance section, the positionalinformation acquiring section 55 corresponds to the positionalinformation acquiring section, the control section 21 and the boardstopper 56 correspond to the correction section, the support tables 37and 47 correspond to the support table, the support table lifting andlowering sections 35 and 45 and the fixing section lifting and loweringsections 36 and 46 correspond to the support member lifting and loweringsection, and the conveyance jig 80 corresponds to the conveyance jig.

The printing device 20 according to the embodiment described in detailabove includes a support member conveyance section (conveyance rod 25 a)for discharging and introducing the screen mask M and the board supportmember 70. In the printing device 20, using this conveyance rod 25 a,the support member exchange process (steps S120 and S130) including thedischarge and the introduction of the board support member 70 can beperformed and the automatic exchanging of the board support member 70can be performed. In addition, using the conveyance rod 25 a, theprinting device 20 can also perform a mask exchange process (steps S110and S140) for performing the discharge and the introduction of thescreen mask M. In other words, automatic exchanging of the board supportmember 70 and automatic exchanging of the screen mask M can be performedusing the same conveyance rod 25 a. Therefore, for example, theconfiguration of the device can be made more compact compared to a casewhere the printing device 20 separately includes the conveyance sectionfor exchanging the screen mask and the conveyance section for exchangingthe board support member.

In addition, the board support member 70 can be disposed on the printingdevice 20, and the printing device 20 includes the first and/or thesecond board fixing sections 30 and/or 40 which fix the board S by thedisposed board support member 70 when the printing process is performed,the positioning sections (Y-axis pressing sections 38 and/or 48, boardguide moving sections 33 and/or 43, and supporting plates 39 a and/or 49a) which perform the positioning of the board support member 70 in thehorizontal direction by moving the board support member 70 disposed onthe first and/or the second board fixing sections 30 and/or 40. In thesupport member introduction process, the control section 21 controls theconveyance rod 25 a to convey the board support member 70 to beintroduced to the first and/or the second board fixing sections 30and/or 40 and controls the Y-axis pressing sections 38 and/or 48, theboard guide moving sections 33 and/or 43, and the support plates 39 aand/or 49 a to perform the positioning of the conveyed board supportmember in the front-rear direction. Therefore, positional deviation canbe suppressed in the first and/or the second board fixing sections 30and/or 40 of the board support member 70 conveyed in the support memberintroduction process in the front-rear direction.

Further, the printing device 20 includes the first and/or the secondboard fixing sections 30 and/or 40, the board conveyance conveyors 31and/or 41 which convey the board S in a predetermined board conveyancedirection (left-right direction), and a positional information acquiringsection 55 which acquires positional information on the position of theboard support member 70 disposed on the first and/or the second boardfixing sections 30 and/or 40 in the board conveyance direction. Theprinting device 20 includes the correction section (control section 21and board stopper 56) which corrects the stopping position on the boardsupport member 70 based on the acquired positional information when theboard conveyance conveyor 31 and/or 41 convey the board S. Accordingly,even in a case where the position of the board support member 70conveyed in the first and/or the second board fixing sections 30 and/or40 in the support member introduction process is deviated in the boardconveyance direction, the stopping position of the board S can becorrected based on the positional information. Therefore, the occurrenceof problems in fixing the board S by the board support member 70 can besuppressed.

Furthermore, the printing device 20 has the support tables 37 and/or 47on which the board support member 70 can be disposed and includes thefirst and/or the second board fixing sections 30 and/or 40 which fix theboard S by the disposed board support member 70 when the printingprocess is performed, the support table lifting and lowering sections 35and/or 45 which lift and lower the board support member 70 disposed onthe support tables 37 and/or 47 by lifting and lowering the supporttables 37 and/or 47, and the fixing section lifting and loweringsections 36 and/or 46. The conveyance rod 25 a discharges and introducesa conveyance jig 80 to which the board support member 70 can beattached, and in a support member discharge process, the control section21 controls the conveyance rod 25 a, the support table lifting andlowering sections 35 and/or 45, and the fixing section lifting andlowering sections 36 and/or 46 to convey the conveyance jig 80 above thefirst and/or the second board fixing sections 30 and/or 40, to lift theboard support member 70 to be discharged disposed on the support tables37 and/or 47, to be attached to the conveyance jig 80, and to performthe process of discharging conveyance jig 80 after the attachment. Inaddition, in the support member introduction process, the controlsection 21 controls the conveyance rod 25 a, the support table liftingand lowering sections 35 and/or 45, and the fixing section lifting andlowering sections 36 and/or 46 to convey the conveyance jig 80 to whichthe board support member 70 to be introduced is attached above the firstand/or the second board fixing sections 30 and/or 40 and lifts thesupport tables 37 and/or 47 to detach the board support member 70 to beintroduced from the conveyance jig 80, to dispose the board supportmember on the support tables 37 and/or 47, and to perform the process ofdischarging the conveyance jig 80 after the detachment. Accordingly,even in a case where the shape or size of the board support member 70 isnot suitable for conveyance by the conveyance rod 25 a, for example, thesupport member exchange process can be performed by conveying the boardsupport member 70 by using the conveyance jig 80. In the printing device20 of the present embodiment, although the conveyance rod 25 a conveysthe screen mask M and the board support member 70 together, since thewidth of the board support member 70 in the left-right direction issmaller than that of the screen mask M, the board support member 70cannot be conveyed directly by the conveyance rod 25 a by sliding on theconveyance rail 29. In a case where the shapes or sizes of the screenmask M and the board support member 70 are different from each other asdescribed above, it is meaningful to use the conveyance jig 80.

Furthermore, the printing device 20 has the first board fixing section30 and the second board fixing section 40 as a board fixing section andhas the first support member lifting and lowering section (support tablelifting and lowering section 35 and fixing section lifting and loweringsection 36) which lifts and lowers the support table 37 and the secondsupport member lifting and lowering section (support table lifting andlowering section 45 and fixing section lifting and lowering section 46)which lifts and lowers the support table 47, as a support member liftingand lowering section. In addition, the conveyance rod 25 a dischargesand introduces the conveyance jig 80 which can attach multiple the boardsupport members 70 thereto. In the support member discharge process, thecontrol section 21 controls the conveyance rod 25 a, the support tablelifting and lowering sections 35 and 45, and the fixing section liftingand lowering sections 36 and 46 to introduce the conveyance jig 80, tolift each of the board support members 70 to be discharged disposed onthe support tables 37 and 47, to attach the board support members to theconveyance jig 80, and to perform the process of conveying theconveyance jig 80 after the attachment. In addition, in the supportmember introduction process, the control section 21 controls theconveyance rod 25 a, the support table lifting and lowering sections 35and 45, and the fixing section lifting and lowering sections 36 and 46to introduce the conveyance jig 80 to which the board support members 70to be introduced and disposed on the support table 37 and the supporttable 47 respectively are attached, to lift the support tables 37 and47, to detach each board support member 70 to be introduced from theconveyance jig 80, to dispose each of the board support members 70 onthe support tables 37 and 47 respectively, and to perform a process ofdischarging the conveyance jig 80 after the detachment. Accordingly, thecontrol section 21 performs the exchange of the board support member 70disposed on the support table 37 and the exchange of the board supportmember 70 disposed on the support table 47 in parallel. By doing so,since the board support members 70 to be discharged disposed on thesupport tables 37 and 47 can be discharged together by the discharge ofthe conveyance jig 80 once and the board support members 70 to beintroduced which are to be disposed on the support tables 37 and 47 canbe introduced together by the introduction of the conveyance jig 80once, the time required for the support member exchange process can beshortened.

It is to be understood that the disclosure is not limited to theembodiment described above in any way and can be implemented in variousaspects as long as it falls within the technical scope of the presentdisclosure.

For example, in the embodiment described above, although the controlsection 21 performs the exchange of the board support member 70 disposedon the support table 37 and the exchange of the board support member 70disposed on the support table 47 in parallel using the conveyance jig 80which can attach two board support members 70 thereto, the disclosure isnot limited thereto. For example, only one of the board support members70 on the support tables 37 or 47 maybe exchanged. In addition, in thiscase, the control section 21 may perform the support member introductionprocess and the support member discharge process in parallel. FIG. 11 isan explanatory view illustrating a state where the support memberintroduction process and the support member discharge process areperformed in parallel. Here, a case where the board support member 70 ofthe second board fixing section 40 is exchanged will be described.First, the control section 21 conveys the conveyance jig 80 to which theboard support member 70 to be introduced is attached above the secondboard fixing section 40 (FIG. 11(a)). Subsequently, the control section21 lifts the board support member 70 to be discharged disposed on thesupport table 47 to attach the board support member 70 to the conveyancejig 80 (FIG. 11(b)). Next, after the attachment, the control section 21further conveys the conveyance jig 80 forward to convey the boardsupport member 70 to be introduced above the support table 47, to liftthe support table 47 to detach the board support member 70 to beintroduced from the conveyance jig 80 and to dispose the board supportmember on the support table 47 (FIG. 11(c)). The control section 21discharges the conveyance jig 80 after the detachment (conveyance jig 80to which the board support member 70 to be discharged is attached)rearward. By doing so, the discharge and the introduction of the boardsupport member 70 can be performed by discharging and introducing theconveyance jig 80 once. Therefore, the time required for the supportmember exchange process can be shortened.

In the embodiment described above, although the printing device 20 candischarge and introduce the screen mask M and the board support member70 together by using the conveyance rod 25 a, the disclosure is notlimited thereto. At least the board support member exchange process canbe performed as long as the disclosure includes a support memberconveyance section which performs the discharging and the introductionof the board support member 70. In addition, even in this case, bymoving the board support members 70 disposed on the first and/or thesecond board fixing sections 30 and/or 40 and performing the positioningof the board support members in the horizontal direction, an effect ofsuppressing positional deviation in the first and/or the second boardfixing sections 30 and/or 40 of the board support members 70 in thefront-rear direction can be obtained. In the embodiment described above,although the printing device 20 that performs exchange of the boardsupport member 70 is described, it is not limited to the printing deviceas long as it performs the board support member exchange process . Thedisclosure can be applied to a board work device that performs a boardwork on a board fixed on aboard support member. As a board work deviceother than the printing device, for example, a mounting device thatperforms a component mounting process on a board can be included, as anexample. In addition, in the embodiment described above, although theprinting device 20 includes the conveyance rod 25 a as a support memberconveyance section, as long as the support member conveyance section canperform the discharge and the introduction of the board support member70, any support member conveyance section may be provided. For example,the support member conveyance section may be a support member conveyanceconveyor including a conveyor belt and a belt revolving device thatrevolves and drives the conveyor belt.

In the embodiment described above, although the board support member 70is conveyed by using the conveyance jig 80, the conveyance jig 80 maynot be used if the board support member 70 can be conveyed by using theconveyance rail 29 and the conveyance rod 25 a.

In the embodiment described above, although the Y-axis pressing section38, the board guide moving section 33, and the support plate 39 a areused to perform the positioning of the board support member 70 in thefront-rear direction, the disclosure is not limited thereto as long asthe positioning is performed in the horizontal direction. For example,the positioning in the left-right direction may be performed in additionto or in place of the positioning in the front-rear direction.

In the embodiment described above, although the protruding sections 71and 72 of the board support member 70 are formed in a cylindrical columnshape, the protruding sections are not limited thereto as long as theprotruding sections can be attached to and detached from the conveyancejig 80. For example, the protruding section may have a square prismshape, a plate shape, or one member in which two cylindrical columns areadjacent to each other. In addition, although the number of theprotruding sections is also two in left and light, the number of theprotruding sections is not limited thereto, one or three or moreprotruding sections may be provided on each of the left and right.

In the embodiment described above, although the first to fourthprotrusion holding sections 81 to 84 hold the protruding sections 71 and72 by the recessed sections, the protrusion holding section is notlimited thereto as long as the protrusion holding section can attach anddetach the protruding sections 71 and 72 to and from the conveyance jig80. For example, it is assumed that the conveyance jig 80 includes apair of plate-like members protruding inside the frame body 85, and theprotruding sections 71 and 72 are placed on the upper face of theplate-like members, whereby attachment of the board support member 70 tothe conveyance jig 80 may be performed. In addition, although when theboard support member 70 is detached from the conveyance jig 80, thelifting of the board support member 70 and the conveyance of theconveyance jig 80 are combined with each other, the disclosure is notlimited thereto. For example, the conveyance jig 80 may include aplate-like member moving mechanism which includes a button that can bepushed downward, a lever that rotates around its axis by lowering thebutton and converts movement in the up-down direction into movement inthe left-right direction , and a plate-like member that moves in theleft-right direction according to the rotation of the lever. In thiscase, the board support member 70 is placed on the plate-shaped memberof a pair of front and rear plate-like member moving mechanisms and isconveyed, and for example, the buttons of the pair of plate-like membermoving mechanisms are pushed down by the conveyance rod 25 a or the liketo separate the pair of plate-like members in left and right and thusmay detach the board support member 70 from the conveyance jig 80. Byadopting such a mechanism, the operation of conveying the conveyance jig80 in the front and the rear is not necessary when the board supportmember 70 is detached from the conveyance jig 80.

In the embodiment described above, although the printing device 20includes the storage section 60, the printing device 20 may not includethe storage section 60. In addition, although the printing device 20 isa dual lane printing device having the first and the second board fixingsections 30 and 40, the printing device is not limited thereto. Forexample, the printing device 20 may be a single lane printing devicehaving one board fixing section.

In the embodiment described above, although the board support member 70is a member that sucks and fixes the board S while supporting the boardS from the lower face side by negative pressure, the board supportmember may be any member as long as the board support member fixes theboard. For example, the board support member includes multipleprotruding sections (backup pins) erected on the upper face and theboard support member may support and fix the board S from below by theprotruding section.

INDUSTRIAL APPLICABILITY

The present disclosure can be used in a board work device that performsa board work on a board, such as a mounting device for mountingcomponents on a board and a printing device related to the mountingdevice.

REFERENCE SIGNS LIST

10: mounting system, 11, 12: pattern hole, 20: printing device, 21:control section, 22: printing process section, 23: printing head, 24:head moving section, 25: squeegee, 25 a: conveyance rod, 26: mask worksection, 27: mask fixing section, 28: position adjustment section, 29:conveyance rail, 30: first board fixing section, 30 a: main body, 30 b:side frame, 31: board conveyance conveyor, 32: board guide, 33: boardguide moving section, 35: support table lifting and lowering section,36: fixing section lifting and lowering section, 37: support table, 38:Y-axis pressing section, 39: Z-axis clamping section, 39 a: a supportplate, 40: second board fixing section, 40 a: main body, 40 b: sideframe, 41: board conveyance conveyor, 42: board guide, 43: board guidemoving section, 45: support table lifting and lowering section, 46:fixing section lifting and lowering section, 47: support table, 48:Y-axis pressing section, 49: Z-axis clamping section, 49 a: supportplate, 50: processing section, 51: carriage, 52: processing sectionmoving section, 53: X-axis slider, 54: Y-axis slider, 55: positionalinformation acquiring section, 56: board stopper, 58: support rail, 60:storage section, 61: conveyance conveyor, 62: conveyor lifting andlowering section, 70: board support member, 70 a: main body section, 71,72: protruding section, 73: suction hole, 74: clamped section, 75:identification section, 76: bar code, 80: conveyance jig, 81 to 84:first to fourth protrusion holding section, 85: frame body, 86: barcode, 90: management PC, M, M2: screen mask, S: board.

1. A printing device which performs a printing process of a viscousfluid on a board fixed on a board support member by using a screen mask,the printing, device comprising: a support member conveyance sectionwhich discharges and introduces the screen mask and the board supportmember; and an exchange control section which can perform a maskexchange process including a mask, discharge process of discharging thescreen mask to be discharged and a mask introduction process ofintroducing the screen mask to be introduced by controlling the supportmember conveyance section and can perform a support member exchangeprocess including a support member discharge process of discharging theboard support member to be discharged and support member introductionprocess of introducing the board support member to be introduced bycontrolling the support member conveyance section.
 2. The printingdevice according to claim 1, further comprising: a board fixing, sectionwhich can dispose the board support member thereon and fixes the boardby the disposed board support member when the printing process isperformed; and a positioning section which performs positioning of theboard support member in a horizontal direction by moving the boardsupport member disposed on the board fixing section, wherein theexchange control section controls the support member conveyance sectionto convey the board support member to be introduced into the boardfixing section and controls, the positioning section to perform thepositioning of the conveyed board support member in the support memberintroduction process.
 3. The printing device according to claim 1,further comprising: a board fixing section which can dispose the hoardsupport member thereon and fixes the board by the disposed board supportmember when the printing process is performed; a board conveyancesection which conveys the board in a predetermined board conveyancedirection; a positional information acquiring section which acquirespositional information related to a position of the board support memberdisposed on the board fixing section in the board conveyance direction;and a correction section which corrects a stopping position on the boardsupport member based on the acquired positional information when theboard conveyance section conveys the board.
 4. The printing deviceaccording to claim 1, further comprising: a board fixing section whichhas a support table which can dispose the board support n ember thereonand fixes the board by the disposed board support member when theprinting process is performed; and a support member lifting and loweringsection which lifts and lowers the board support member disposed on thesupport table by lifting and lowering the support table, wherein thesupport member conveyance section discharges and introduces conveyancejig which can attach the board support member thereto, and wherein inthe support member discharge process, the exchange control sectionconveys the conveyance jig to convey the conveyance jig above the boardfixing section, lifts the board support member to be discharged disposedon the support table to attach the board support member to theconveyance jig, and performs a process of discharging the conveyance jigafter the attachment by controlling the support member conveyancesection and the support member lifting and lowering section, and in thesupport member introduction process, the exchange control sectionconveys the conveyance jig to which the board support member to beintroduced is attached above the board fixing section lifts the supporttable to detach the board support member to be introduced from theconveyance jig and then to dispose the board support member on thesupport table, and performs a process of discharging the conveyance jigafter the detachment, by controlling the support member conveyancesection and the support member lifting and lowering section.
 5. Theprinting device according to claim 4, wherein the conveyance jig canattach multiple the board support members thereto, and wherein in thesupport member exchange process, the exchange control section conveysthe conveyance jig to which the board support member to be introduced isattached above the board fixing section, lifts the board support memberto be discharged disposed on the support table to attach the boardsupport member to the conveyance jig, conveys the conveyance jig afterthe attachment to convey the board support member to be introduced abovethe support table, lifts the support table to detach the board supportmember to be introduced from the conveyance jig and then to dispose theboard support member on the support table, and performs a process ofdischarging the conveyance jig after the detachment so that the supportmember discharge process and the support member introduction process areperformed in parallel, by controlling the support member conveyancesection and the support member lifting and lowering section.
 6. Theprinting device according to claim 4, wherein the board fixing sectionhas a first board fixing section which has a first support table whichcan dispose the hoard support member thereon and fixes the board by thedisposed board support member when the printing process is performed anda second board fixing section which has a second support table which candispose the board support member thereon and fixes the board by thedisposed board support member when the printing process is performed,wherein the support member lifting and lowering section has a firstsupport member lifting and lowering section which lifts and lowers theboard support member disposed on Me first support table by lifting andlowering the first support table and a second support member lifting andlowering section which lifts and lowers the board support memberdisposed on the second support table by lifting and lowering the secondsupport table, wherein the support member conveyance section dischargesand introduces the conveyance jig which can, attach the multiple boardsupport members thereto, and wherein in the support member dischargeprocess, the exchange control section introduces the conveyance jig,lifts each of the board support members to be discharged disposed on thefirst and the second support tables to attach the board support memberto the conveyance jig, and performs a process of discharging theconveyance jig after the attachment, by controlling the support memberconveyance section and the first and the second support member liftingand lowering sections and in the support member introduction process,the exchange section introduces the conveyance jig to which the boardsupport members to be introduced are attached disposed on the first andthe second support tables, respectively, lifts the first and the secondsupport tables to detach each of the board support members to beintroduced from the conveyance jig to dispose the board support memberson the first and the second support tables, respectively, and performs aprocess of discharging the conveyance jig after the detachment so thatthe exchange of the board support member disposed on the first supporttable and the exchange of the board support member disposed on thesecond support table are performed in parallel the support n emberconveyance section and the first and the second support member liftingand lowering sections.
 7. A board work device which performs a boardwork on a board fixed on a board support member, the board work devicecomprising: a support member conveyance section which discharges andintroduces the board support member; a board fixing section which candispose the board support member thereon and fixes the board by thedisposed board support member when the board work is performed; apositioning section which performs positioning of the board supportmember in a horizontal section by moving the board support memberdisposed on the board fixing section; and an exchange control sectionwhich performs a support member exchange process including supportmember discharge process of discharging the board support member to bedischarged by controlling the support member conveyance section and asupport member introduction process of conveying the board supportmember to be introduced to the board fixing section controlling thesupport member conveyance section and performing positioning of theconveyed board support member by controlling the positioning section.